METHODS OF REPAIRING A THERMAL BARRIER COATING OF A GAS TURBINE COMPONENT AND THE RESULTING COMPONENTS

摘要

Turbine engine components are provided that have a repaired thermal barrier coating, along with their methods of formation and repair. The turbine engine component includes a thermal barrier coating on a first portion of a surface of a substrate; a repaired thermal barrier coating on a second portion of the surface of the substrate; and a ceramic coat on the outer bond coat. The thermal barrier coating includes an inner bonding layer and a first ceramic layer, with the inner bonding layer being positioned between the substrate and the first ceramic layer. The repaired thermal barrier coating generally includes an inner bond coat on the surface of the substrate and an outer bond coat on the inner bond coat. The inner bond coat is formed from a cobalt-containing material, while the outer bond coat is substantially free from cobalt.

主权项

1. A turbine engine component having a repaired thermal barrier coating, the turbine engine component comprising:
a substrate defining a surface; a thermal barrier coating on a first portion of the surface of the substrate, wherein the thermal barrier coating comprises an inner bonding layer and a first ceramic layer, and wherein the inner bonding layer is positioned between the substrate and the first ceramic layer; a repaired thermal barrier coating on a second portion of the surface of the substrate, wherein the repaired thermal barrier coating comprises:
an inner bond coat on the surface of the substrate, wherein the inner bond coat comprises a cobalt-containing material;an outer bond coat on the inner bond coat, wherein the outer bond coat is substantially free from cobalt; anda ceramic coat on the outer bond coat.